Dash board lights

[GrandC]

I have a 1998 Grand Caravan. When I start it there are four buttons on the
dash, under the radio that begin flashing their amber "on" lights. These
are the two rear wiper buttons, the vent recirc., and the AC buttons.
Everything works fine, including these. I can't get the lights to stop
flashing. I disconnected the B- for 5 minutes in an attempt to reset
computer but no joy. Any thoughts?